arc: Add splash screen for ARC++ Kiosk startup

chrome/browser/chromeos/login/ui/login_display_host_impl.h

Index: chrome/browser/chromeos/login/ui/login_display_host_impl.h
diff --git a/chrome/browser/chromeos/login/ui/login_display_host_impl.h b/chrome/browser/chromeos/login/ui/login_display_host_impl.h
index 68cbabed199b5c032e1b0c9619f0f799aba06760..e20a8864de9097e4cd04f98d3e9c4b0587ad2dea 100644
--- a/chrome/browser/chromeos/login/ui/login_display_host_impl.h
+++ b/chrome/browser/chromeos/login/ui/login_display_host_impl.h
@@ -15,6 +15,7 @@
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/login/app_launch_controller.h"
+#include "chrome/browser/chromeos/login/arc_kiosk_controller.h"

[Luis Héctor Chávez, 2017/01/24 18:40:24]

nit: remove and fwd-declare ArcKioskController

[Sergey Poromov, 2017/01/25 14:29:22]

Done.

 #include "chrome/browser/chromeos/login/auth/auth_prewarmer.h"
 #include "chrome/browser/chromeos/login/existing_user_controller.h"
 #include "chrome/browser/chromeos/login/signin_screen_controller.h"
@@ -84,6 +85,7 @@ class LoginDisplayHostImpl : public LoginDisplayHost,
       bool diagnostic_mode,
       bool auto_launch) override;
   void StartDemoAppLaunch() override;
+  void StartArcKiosk(const AccountId& account_id) override;
 
   // Creates WizardController instance.
   WizardController* CreateWizardController();
@@ -217,6 +219,9 @@ class LoginDisplayHostImpl : public LoginDisplayHost,
   // Demo app launcher.
   std::unique_ptr<DemoAppLauncher> demo_app_launcher_;
 
+  // ARC kiosk controller.
+  std::unique_ptr<ArcKioskController> arc_kiosk_controller_;
+
   // Make sure chrome won't exit while we are at login/oobe screen.
   std::unique_ptr<ScopedKeepAlive> keep_alive_;